Kia Optima Hybrid: ESC(Electronic Stability Control) System / Yaw-rate and Lateral G Sensor Description and Operation

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Brake System / ESC(Electronic Stability Control) System / Yaw-rate and Lateral G Sensor Description and Operation

Description

When the vehicle is turning with respect to a vertical axis the yaw rate sensor detects the yaw rate electronically by the vibration change of plate fork inside the yaw rate sensor.

If yaw velocity reaches the specific velocity after it detects the vehicle''yawing, the ESC control is reactivated.

The later G sensor senses vehicle''s lateral G. A small element inside the sensor is attached to a deflectable leverarm by later G.

Direction and magnitude of lateral G loaded to vehicle can be known with electrostatic capacity changing according to lateral G.

Specifications

Description		Specification	Remarks
Operating voltage		10 ~ 16V
Output signal		CAN Interface
Operating temperature		-40 ~ 85°C (-40 ~ 185°F)
Yaw-rate sensor	Measurement range	-75 ~ 75°/sec
Yaw-rate sensor	Frequency response	15 ~ 45Hz
Lateral G sensor	Measurement range	-14.715 ~ +14.715g
Lateral G sensor	Frequency response	50Hz ± 60%

External Diagram

Rear Wheel Speed Sensor Repair procedures

Removal 1. Remove the rear wheel and tire. Tightening torque: 88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft) 2. Remove the rear wheel speed sensor mounting bolt (A). Tightening torque: 6.9 ~ 10.8 ...

Yaw-rate and Lateral G Sensor Repair procedures

Removal 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the floor console. (Refer to the Body group - "Console") 3. Disconnect the yaw rate & lateral G sensor connector ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Troubleshooting

Trouble Symptom Charts Trouble Symptom 1 Trouble Symptom 2 Trouble symptomProbable causeRemedyThe set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle speed ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Cluster ionizer Repair procedures

Inspection 1. Press the MODE switch more then 4 times within 2 seconds while pressing the OFF switch. DisplayFail description00Normal50Cluster ion generator fault * Diagnostic procedure refer to DTC code. Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the crash pad. (Refer to ...